The double-T sinusoidal oscillator with stable output composed of LM170

Published:2011/4/20 21:48:00 Author:Ecco | Keyword: double-T, sinusoidal oscillator , stable output | From:SeekIC

The chart shows the double-T sinusoidal oscillator circuit with stable output. The circuit uses the automatic gain control amplifier LM170 to stabilize its amplitude. This approach can guarantee the waveform distortion. Even if the double-T loop and the amplifier gain changes, it can ensure the output amplitude constant. Component values can compensate for 40dB changes. 100k potentiometer is used to change the threshold level of automatic gain control, thereby changing the output level. Circuit oscillation frequency: f0 = 1/2π, RC uses the value of the marked components in the figure, the oscillation frequency is approximately 1kHz.



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